/Engine/Source/Runtime/CoreUObject/Public/Misc/PackageName.h
Tries to convert a long package name to a file name with the supplied extension. This can be called on package paths as well, provide no extension in that case
Package filename.
static bool TryConvertLongPackageNameToFilename ( const [FString](API\Runtime\Core\Containers\FString) & InLongPackageName, [FString](API\Runtime\Core\Containers\FString) & OutFilename, const [FString](API\Runtime\Core\Containers\FString) & InExtension )